Where the boundaries of a proposed local board's district were the same as an existing local unit, the act was applied by Order in Council.
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On 19 June 1874, Ebbw Vale, Rhymney and Tredegar local boards of health and local government districts were formed, each including parts of the civil parish.
Apart from the town of Morley, it included Churwell (a separate Local Government District until 1891), East Ardsley (or Ardsley East), West Ardsley, Drighlington and Gildersome (urban districts absorbed in 1937).